Features:

  • SuperStat exceeds OE performance
  • Contains larger piston and springs that OE themostats
  • Better flow control than OE themostats
  • Stainless steel flange for longer life and strength
  • Use when you want 195 Degrees Fahrenheit
Fits my 1999 jeep wrangler

The previous owner of my 1999 4.0L Jeep Wrangler TJ either installed an old misshapen thermostat, a subpar part, or warped it when tightening down the thermostat housing. That caused my jeep to continuously cool the engine and I didn't get any hot air. I pulled the old one and put on this one and so far I haven't had any problems. The orientation wasn't clear to me as this doesn't have a jiggle valve (that I could see) so I'm not sure orientation matters for this type. I checked the reported temp w/ an ODBII sensor and it reports 196 degF so I'm confident this part works properly.

Fixed my problems.

My 93 Jeep Grand Cherokee temperature would swing about 20 deg all the time even after replacing with a new thermostat from autozone. After installing the superstat it only swings the width of the needle. DO NOT DRILL A HOLE. If you look closely there is a V notch on the back side that lets the air bleed out. Place that at the top of the housing.

Last thermostat stuck wide open

Living in Arizona, this wasnt a huge deal in the summer. Kept my truck running cool especially during towing. Now that its winter, my gas mileage is horrible and it wasnt warming up past 120. Did a quick flush, installed this guy and voila. Truck now warms up to operating temp like it should. No complaints. Does not come with any gaskets fyi. 1995 Tahoe TBI

Replacing a 6 month old thermostat that failed luckily in ...

Replacing a 6 month old thermostat that failed luckily in the open position, the one being replaced is not a Stant product, but a well known name. Usually, thermostats last a long time, but past 10 years or so, it seems failures are premature. Luckily this thermostat is a breeze to replace on my Jeep Wrangler YJ.

Stupid is as stupid does

How can I know what mileage the thermostat lasted for? I just put it in. It's the same part number for my Cadillac, Silverado, and Ford..so it's kinda generic to ask how easy it was to install..duh! Depends on what vehicle you're installing it on. But seriously if you need someone to tell you if it's easy or hard you just need to take it to a mechanic! As far as presentation..hello, it's not a 3 course meal.. it's a thermostat!

Stant Quality

Another Stant Five Star product! Being able to purchase quality automotive parts in the most trusted brands from the comfort of home is wonderful. Item arrived ahead of schedule, was packaged securely, and as usual Amazon delivers the items to my front door at about half the price of local retailers! Right on temperature with no early pressure release issues. Rock Solid This is a product that I feel comfortable in my buying decision, would purchase again if needed, and would recommend to other consumers without hesitation.

Stant SuperStat is My Go To Thermostat

I bought this for my 1970 Chev C-20 Pickup. I always use Stant thermostats. I've tried Oriley Autopart's Murray thermostats in my car before and the only two that I've ever bought were bad right out of the box. My car would't get up to operating temp, and would never heat up in the winter, but I've NEVER had this issue with a Stant thermostat. I always buy the Stant SuperStat tho. I've never used their OE thermostats so I can't speak for them. I currently have this Stant SuperStat in my pickup which still works great after about 5-7 years. The only reason I bought a new one is because I'm putting a new motor and transmission in my truck and wanted a new thermostat to go with the new motor.

Works

Does the job. Installed on my 98 Wrangler TJ. I've included before and after. Also- if you Google Jeep sites you'll see that many suggest drilling a small hole on outer stat flange and orient the stat so that the hole is at the top (this is only necessary with a vertically mounted thermostat like on the 4.0 Wrangler). This allows you to completely burp the coolant system (very important)

I did my own experiment and the Stant SuperStat was the clear winner

These are the best, they open and close way faster and more accurately than the ones from autozone, napa, etc. I did an experiment and used this one, one from autozone and one from Oreilly's - I put them in a pot of boiling water and used a thermometer to know what temp each one opened up at. Although all three were supposed to open at 195*F, only the Stant opened up anywhere closed to that number. The other two opened up closer to 170*F. When I turned the heat off on the stove, the Stant closed first too. I repeated this a few times and the result was always the same. Why is this important? The engine (and it's computer) want it operating at a specific temperature. Too cold and it will be much less fuel efficient! Too hot and, well, that's called overheating and that's no bueno. Hope this helps!

I installed this with my 2015 engine swap… no problems to date.

Not much I can say about a thermostat except that it’s be doing what it should since I installed it and the temperature range according to my dash gauge is right where it should be opening. Since my crate engine was replacing a tired old oil guzzler in my ’90 Chevy K2500 I couldn’t see using much of anything from the old engine so I replaced about everything else and especially all the water lines, pump and anti-freeze so also did this while everything was easy to reach. I’ve had thermostats stick both open and closed so I always have a spare one with a gasket rather than risking an over heated engine when it sticks in the closed position. I’m a lot of miles from the nearest service center, towing is expensive and walking a lot of miles on desolate roads out here in the high desert isn’t worth cheeping out on a thermostat that costs under 10-bucks doesn’t make any sense to me. The gasket is not normally included and there wasn’t one for this because many vechicles can use the same unit but have different gaskets.

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